Rotary kiln waste heat recovery device

Abstract

The utility model discloses a rotary kiln waste heat recovery device which comprises rotary kiln waste heat recovery spliced boilers, the number of the rotary kiln waste heat recovery spliced boilers is three, and installation frames are fixedly installed at the positions, located at the two ends, of the outer sides of the rotary kiln waste heat recovery spliced boilers. The installation connecting plates are fixedly installed between the installation frames, the left control box and the right control box are fixed to the positions, located at one ends, of the front surfaces of the installation connecting plates, the installation frames are fixedly connected through hexagon bolts, the installation connecting plates are fixedly connected through hexagon bolts, and the number of the spliced boiler shells is three. The heat preservation and insulation filling sleeve is fixedly installed in the spliced boiler shell. According to the rotary kiln waste heat recovery device, the rotary kiln waste heat recovery splicing boilers are matched with the installation frame, the splicing number can be increased or decreased according to the heat quantity of rotary kiln waste heat recovery, and the rotary kiln waste heat recovery device is higher in adaptation degree.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery structures for rotary kilns, and particularly relates to a waste heat recovery device for rotary kilns. Background Technique

[0002] A rotary kiln generally refers to a rotary hearth kiln, which is a rotary calcination kiln. Its shape is similar to a rotary hearth, and it is also called a rotary hearth kiln. It belongs to the category of building materials equipment. Rotary kilns can be divided into cement kilns, metallurgical and chemical kilns, and lime kilns according to the materials processed. The waste heat recovery structure of a rotary kiln refers to the structure that utilizes the heat of the flue gas of the rotary kiln.

[0003] When the existing waste heat recovery device for rotary kilns is in use, there are certain drawbacks. The waste heat boiler in the traditional waste heat recovery device for rotary kilns cannot be spliced, and cannot be adjusted by splicing the waste heat boiler of the rotary kiln according to the amount of heat of the discharged flue gas, resulting in a low adaptability of the waste heat recovery device for rotary kilns. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a waste heat recovery device for rotary kilns, which can effectively solve the problems in the background technique.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A waste heat recovery device for rotary kilns includes a waste heat recovery splicing boiler for rotary kilns. The number of the waste heat recovery splicing boilers for rotary kilns is three. The installation frames are fixedly installed at the positions at both ends outside the waste heat recovery splicing boilers for rotary kilns. An installation connecting plate is fixedly installed between the installation frames. A left-right control box is fixedly installed at one end of the front surface of the installation connecting plate. The installation frames are fixedly connected by hexagon bolts, and the installation connecting plates are fixedly connected by hexagon bolts.

[0007] Preferably, the waste heat recovery splicing boiler for rotary kilns includes a splicing boiler housing, a heat insulation filling sleeve, a boiler heating inner tank, a flue gas heating spiral pipe, a water inlet joint, a water outlet joint, a water inlet solenoid valve, a drain solenoid valve, a temperature controller and a smoke exhaust fan.

[0008] Preferably, the number of the splicing boiler housings is three. The heat insulation filling sleeve is fixedly installed inside the splicing boiler housing, and the boiler heating inner tank is fixedly installed inside the heat insulation filling sleeve.

[0009] Preferably, the flue gas heating spiral pipe is fixedly installed inside the flue gas heating spiral pipe. The upper and lower ends of the flue gas heating spiral pipe pass through the splicing boiler housing, the heat insulation filling sleeve and the boiler heating inner tank. An exhaust pipe head is fixedly installed at one end of the boiler heating inner tank away from the flue gas heating spiral pipe.

[0010] Preferably, the flue gas heating spiral pipes are fixedly connected by hexagon bolts.

[0011] Preferably, the water inlet joint passes through the spliced boiler shell and is fixedly connected to one end of the heat insulation filling sleeve and the boiler heating inner tank. The water outlet joint passes through the spliced boiler shell and is fixedly connected to the other end of the heat insulation filling sleeve and the boiler heating inner tank. The water inlet joint is communicated with the inside of the boiler heating inner tank, and the water outlet joint is communicated with the inside of the boiler heating inner tank.

[0012] Preferably, the water inlet solenoid valve is fixedly installed at the front end of the water inlet joint by bolts. The drain solenoid valve is fixedly installed at the front end of the water outlet joint by bolts. The temperature controller is fixedly installed outside the drain solenoid valve. The smoke exhaust fan is fixedly installed at the lower end of the flue gas heating spiral pipe by hexagon bolts. The lower end of the temperature probe of the temperature controller is inserted into the front end inside the drain solenoid valve.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] In the present utility model, through the provided rotary kiln waste heat recovery spliced boiler and the installation frame, the rotary kiln waste heat recovery spliced boiler and the installation frame can be adjusted by increasing or decreasing the splicing quantity according to the amount of heat recovered from the rotary kiln waste heat, making the adaptability of the rotary kiln waste heat recovery device higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a rotary kiln waste heat recovery device of the present utility model;

[0016] Figure 2 It is a partial structural decomposition schematic diagram of the rotary kiln waste heat recovery spliced boiler of a rotary kiln waste heat recovery device of the present utility model;

[0017] Figure 3 It is a schematic diagram of the structure of the smoke exhaust fan of a rotary kiln waste heat recovery device of the present utility model;

[0018] Figure 4 It is a Figure 1 magnified schematic diagram of part A of a rotary kiln waste heat recovery device of the present utility model;

[0019] Figure 5 It is a Figure 1 magnified schematic diagram of part B of a rotary kiln waste heat recovery device of the present utility model.

[0020] In the figure: 1. Rotary kiln waste heat recovery spliced boiler; 101. Spliced boiler outer shell; 102. Thermal insulation filling sleeve; 103. Boiler heating inner liner; 104. Flue gas heating spiral pipe; 105. Water inlet joint; 106. Water outlet joint; 107. Water inlet solenoid valve; 108. Drain solenoid valve; 109. Temperature controller; 110. Smoke exhaust fan; 2. Installation frame; 3. Installation connecting plate; 4. Control box. Detailed implementation mode

[0021] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with the specific implementation modes.

[0022] As Figures 1-5 shown, a rotary kiln waste heat recovery device includes a rotary kiln waste heat recovery spliced boiler 1. The number of rotary kiln waste heat recovery spliced boilers 1 is three. The installation frames 2 are fixedly installed at the positions at both ends outside the rotary kiln waste heat recovery spliced boiler 1. The installation connecting plates 3 are fixedly installed between the installation frames 2. The control box 4 is fixedly installed at one end of the front surface of the installation connecting plate 3. The installation frames 2 are fixedly connected by hexagon bolts, and the installation connecting plates 3 are fixedly connected by hexagon bolts. The rotary kiln waste heat recovery spliced boiler 1 and the installation frame 2 can be adjusted by increasing or decreasing the splicing quantity according to the amount of waste heat recovered by the rotary kiln, so that the adaptability of the rotary kiln waste heat recovery device is higher.

[0023] The rotary kiln waste heat recovery spliced boiler 1 includes a spliced boiler housing 101, a heat insulation filling sleeve 102, a boiler heating inner liner 103, a flue gas heating spiral pipe 104, a water inlet joint 105, a water outlet joint 106, a water inlet solenoid valve 107, a drain solenoid valve 108, a temperature controller 109 and a smoke extractor 110; there are three spliced boiler housings 101, the heat insulation filling sleeve 102 is fixedly installed inside the spliced boiler housing 101, and the boiler heating inner liner 103 is fixedly installed inside the heat insulation filling sleeve 102; the flue gas heating spiral pipe 104 is fixedly installed inside the flue gas heating spiral pipe 104, the upper and lower ends of the flue gas heating spiral pipe 104 pass through the spliced boiler housing 101, the heat insulation filling sleeve 102 and the boiler heating inner liner 103, and an exhaust pipe head is fixedly installed at one end of the boiler heating inner liner 103 away from the flue gas heating spiral pipe 104; the flue gas heating spiral pipes 104 are fixedly connected by hexagon bolts; the water inlet joint 105 passes through the spliced boiler housing 101, the heat insulation filling sleeve 102 and is fixedly connected to one end of the boiler heating inner liner 103, the water outlet joint 106 passes through the spliced boiler housing 101, the heat insulation filling sleeve 102 and is fixedly connected to the other end of the boiler heating inner liner 103, the water inlet joint 105 is communicated with the inside of the boiler heating inner liner 103, and the water outlet joint 106 is communicated with the inside of the boiler heating inner liner 103; the water inlet solenoid valve 107 is fixedly installed at the front end of the water inlet joint 105 by bolts, the drain solenoid valve 108 is fixedly installed at the front end of the water outlet joint 106 by bolts, the temperature controller 109 is fixedly installed outside the drain solenoid valve 108, the smoke extractor 110 is fixedly installed at the lower end of the flue gas heating spiral pipe 104 by hexagon bolts, and the lower end of the temperature probe of the temperature controller 109 is inserted into the front end inside the drain solenoid valve 108.

[0024] It should be noted that the present utility model is a rotary kiln waste heat recovery device. When in use, in the rotary kiln waste heat recovery spliced boiler 1 and the installation frame 2, according to the amount of heat recovered from the rotary kiln waste heat, the number of spliced rotary kiln waste heat recovery spliced boilers 1 and installation frames 2 can be increased or decreased. The installation frame 2 and the flue gas heating spiral pipe 104 are spliced by hexagon bolts. The heat insulation filling sleeve 102 between the spliced boiler shell 101 and the boiler heating inner tank 103 plays a role in heat insulation, reducing the heat loss in the boiler heating inner tank 103. The uppermost flue gas heating spiral pipe 104 is connected to the rotary kiln flue gas discharge pipe. The water inlet solenoid valve 107 is connected to the cold water delivery pipe by hexagon bolts. The drain solenoid valve 108 is connected to the hot water delivery pipe by hexagon bolts. The exhaust pipe head outside the boiler heating inner tank 103 is connected to the steam discharge pipe. The outlet of the smoke exhaust fan 110 is connected to the flue gas discharge pipe. The smoke exhaust fan 110 sucks the flue gas in the rotary kiln into the interior of the flue gas heating spiral pipe 104 and discharges it from the outlet of the smoke exhaust fan 110 into the flue gas discharge pipe. The flue gas heating spiral pipe 104 has more uniform heating. When the cold water inside the boiler heating inner tank 103 is heated to a certain temperature by the hot gas in the flue gas heating spiral pipe 104, the temperature controller 109 opens the drain solenoid valve 108, and the water is discharged into the hot water delivery pipe through the drain solenoid valve 108. Subsequently, the water inlet solenoid valve 107 is opened, and cold water re-enters the interior of the boiler heating inner tank 103 through the water inlet solenoid valve 107. The steam during the heating process is discharged from the exhaust joint on the boiler heating inner tank 103 into the steam discharge pipe. The rotary kiln waste heat recovery spliced boiler 1 and the installation frame 2 can be adjusted by increasing or decreasing the splicing quantity according to the amount of heat recovered from the rotary kiln waste heat, making the adaptability of the rotary kiln waste heat recovery device higher.

[0025] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art of this industry should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A rotary kiln waste heat recovery device, characterized in that: It includes a rotary kiln waste heat recovery spliced boiler (1) and an installation frame (2). There are three rotary kiln waste heat recovery spliced boilers (1). The installation frame (2) is fixedly installed at the positions at both ends on the outside of the rotary kiln waste heat recovery spliced boiler (1). An installation connecting plate (3) is fixedly installed between the installation frames (2). A left and right control box (4) is fixedly installed at one end of the front surface of the installation connecting plate (3). The installation frames (2) are fixedly connected by hexagon bolts. The installation connecting plates (3) are fixedly connected by hexagon bolts.

2. The waste heat recovery device for a rotary kiln according to claim 1, wherein: The rotary kiln waste heat recovery spliced boiler (1) includes a spliced boiler shell (101), a heat insulation and heat filling sleeve (102), a boiler heating inner tank (103), a flue gas heating spiral pipe (104), a water inlet joint (105), a water outlet joint (106), a water inlet solenoid valve (107), a drain solenoid valve (108), a temperature controller (109) and a smoke extractor (110).

3. A waste heat recovery device for a rotary kiln according to claim 2, characterized in that: There are three spliced boiler shells (101). The heat insulation and heat filling sleeve (102) is fixedly installed inside the spliced boiler shell (101). The boiler heating inner tank (103) is fixedly installed inside the heat insulation and heat filling sleeve (102).

4. A waste heat recovery device for a rotary kiln according to claim 3, characterized in that: The flue gas heating spiral pipe (104) is fixedly installed inside the flue gas heating spiral pipe (104). The upper and lower ends of the flue gas heating spiral pipe (104) pass through the spliced boiler shell (101), the heat insulation and heat filling sleeve (102) and the boiler heating inner tank (103). An exhaust pipe head is fixedly installed at one end of the boiler heating inner tank (103) away from the flue gas heating spiral pipe (104).

5. A waste heat recovery device for a rotary kiln according to claim 4, characterized in that: The flue gas heating spiral pipes (104) are fixedly connected by hexagon bolts.

6. The waste heat recovery device for a rotary kiln according to claim 5, characterized in that: The water inlet joint (105) passes through the spliced boiler shell (101), the heat insulation and heat filling sleeve (102) and is fixedly connected to one end of the boiler heating inner tank (103). The water outlet joint (106) passes through the spliced boiler shell (101), the heat insulation and heat filling sleeve (102) and is fixedly connected to the other end of the boiler heating inner tank (103). The water inlet joint (105) is connected to the inside of the boiler heating inner tank (103). The water outlet joint (106) is connected to the inside of the boiler heating inner tank (103).

7. The waste heat recovery device for a rotary kiln according to claim 6, wherein: The water inlet solenoid valve (107) is fixedly installed at the front end of the water inlet joint (105) by bolts. The drain solenoid valve (108) is fixedly installed at the front end of the water outlet joint (106) by bolts. The temperature controller (109) is fixedly installed outside the drain solenoid valve (108). The smoke extractor (110) is fixedly installed at the lower end of the flue gas heating spiral pipe (104) by hexagon bolts. The lower end of the temperature probe of the temperature controller (109) is inserted into the front end inside the drain solenoid valve (108).

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